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Eyepieces 

Head of microscope 

Knurled diopter collar 

Post 

Objective turret 

Head position 
locking screw 

Focusing 

knob 

Base 

Stage Plate 

Stage Clips 

Top light housing 

Head retaining screw 

(one on each side) 

Light control 

switches 

Power switch 

Post 

locking 

knob 

Fuse 

Rubber eyeshields 

Light  housing 

locking knob 

Locking set screw 
(located on side) 

Summary of Contents for 446TBL

Page 1: ...Instruments Inc 6508 Tri County Parkway Schertz Texas 78154 Phone 210 590 9010 Fax 210 590 1104 INSTRUCTIONS FOR MODELS 446TBL 447TBL AND 448TBL STEREOSCOPIC MICROSCOPES Copyright 1 2 01 National Optical Scientific Instrument Inc ...

Page 2: ...urret Head position locking screw Focusing knob Base Stage Plate Stage Clips Top light housing Head retaining screw one on each side Light control switches Power switch Post locking knob Fuse Rubber eyeshields Light housing locking knob Locking set screw located on side ...

Page 3: ...ntainer and then pack the styrofoam in another corrugated shipping container for optimum protection Use of the styrofoam alone will not provide adequate protection in transit and will void your warranty ASSEMBLY OPERATION 1 Install rubber eyepiece shields over top of eyepieces with the flared portion of the shields positioned at the outside edge of eyepieces These help block out undesired light re...

Page 4: ...ve WF10X supplied WF15X optional Maximum Total Magnification Field Size Total Magnification Field Size Working Distance Specimen Height 1X 10X 20mm 15X 13mm 75mm 60mm 3X 30X 6 6mm 45X 4 3mm 2X 20X 10mm 30X 6 5mm 75mm 60mm 4X 40X 5mm 60X 3 2mm 1X 10X 20mm 15X 13mm 75mm 60mm 2X 20X 10mm 30X 4 5mm 8 Before making close observations the following steps should be taken to adjust the microscope for your...

Page 5: ...ood source of air C To clean eyepiece lenses do not remove from eyepiece tube Clean only the outer lens surface Breath on lens to dampen surface then wipe with lens paper or tissue or use a cotton swab moistened with distilled water Wipe lenses with a circular motion applying as little pressure as possible Avoid wiping dry lens surface as lenses are scratched easily If excessive dirt or grease get...

Page 6: ...ear left side of microscope base To remove fuse from holder insert a 6mm screwdriver blade into slot located in rear of fuse holder cap Slightly depress and rotate screwdriver turn in direction of arrow release pressure on screwdriver to release the fuse Pull cap and fuse out of fuse holder Insert proper fuse into fuse cap Insert fuse cap into fuse holder Using screwdriver rotate fuse cap assembly...

Page 7: ...Black plastic stage plate 80mm 941 460W White plastic stage plate 80mm 941 410 Black White plastic contrast plate 80mm 965 400 05 Eyepiece reticle 5mm 100 div 22 8 mm diameter for WF10x eyepiece only 965 400 10 Eyepiece reticle 10mm 100 div 22 8 mm diameter for WF10x eyepiece only LIMITED LIFETIME WARRANTY Please see our website www nationaloptical com for complete warranty details and exclusions ...

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